Zooming on images
ddnebert
ddnebert at usgs.gov
Mon Sep 20 12:45:24 PDT 1999
I have now four nice TIF images that I would like to use as backdrop to
other
data. The files are as follows with wld files that let them render fine
individually
at full extent. If I try to set another extent in the GET request, I
still see the
whole world, rather than a zoomed in region.
shdrela.tif 640 x 320 TIF
shdrelb 2160 x 1080 TIF
shdrelc 4800 x 2400 TIF
shdreld 10800 x 5400 TIF
So I have two problems:
1. How do I make the registration correct? I calculated the TFW files
as attached.
2. Once I can view one of the files, I'd like to set them up as a
cascade
of a single theme, broken by MINSCALE and MAXSCALE values.
Should the following work?
LAYER
NAME shdrelief
TYPE RASTER
STATUS ON
DATA shdrela.tif
MINSCALE 5000000
OFFSITE 0
END
LAYER
NAME shdrelief
TYPE RASTER
STATUS ON
DATA shdrelb.tif
MINSCALE 3000000
MAXSCALE 5000000
OFFSITE 0
END
LAYER
NAME shdrelief
TYPE RASTER
STATUS ON
DATA shdrelc.tif
MINSCALE 1000000
MAXSCALE 3000000
OFFSITE 0
END
LAYER
NAME shdrelief
TYPE RASTER
STATUS ON
DATA shdreld.tif
MAXSCALE 1000000
OFFSITE 0
END
-------------- next part --------------
0.5625
0.00000000000000
0.00000000000000
-0.5625
-179.4375
89.4375
-------------- next part --------------
0.1666667
0.00000000000000
0.00000000000000
-0.1666667
-179.833333
89.833333
-------------- next part --------------
0.075
0.00000000000000
0.00000000000000
-0.075
-179.925
89.925
-------------- next part --------------
0.03333333
0.00000000000000
0.00000000000000
-0.03333333
-179.9666667
89.9666667
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